pp.c TODO
Invalid type in unpack: '%c
my $A = pack ("A,A", 1,2) ;
my @A = unpack ("A,A", "22") ;
Attempt to pack pointer to temporary value
pack("p", "abc") ;
__END__
use warnings 'pack' ;
use warnings 'unpack' ;
my @a = unpack ("A,A", "22") ;
my $a = pack ("A,A", 1,2) ;
no warnings 'pack' ;
no warnings 'unpack' ;
my @b = unpack ("A,A", "22") ;
my $b = pack ("A,A", 1,2) ;
EXPECT
Invalid type ',' in unpack at - line 4.
Invalid type ',' in pack at - line 5.
########
# pp.c
use warnings 'uninitialized' ;
my $a = undef ;
my $b = $$a;
no warnings 'uninitialized' ;
my $c = $$a;
EXPECT
Use of uninitialized value in scalar dereference at - line 4.
########
use warnings 'pack' ;
sub foo { my $a = "a"; return $a . $a++ . $a++ }
my $a = pack("p", &foo) ;
no warnings 'pack' ;
my $b = pack("p", &foo) ;
EXPECT
Attempt to pack pointer to temporary value at - line 4.
########
# pp.c
use warnings 'misc' ;
bless \[], "" ;
no warnings 'misc' ;
bless \[], "" ;
EXPECT
Explicit blessing to '' (assuming package main) at - line 3.
########
# pp.c
use utf8 ;
$_ = "\x80 \xff" ;
reverse ;
EXPECT
########
use warnings 'pack' ;
print unpack("C", pack("C", -1)), "\n",
unpack("C", pack("C", 0)), "\n",
unpack("C", pack("C", 255)), "\n",
unpack("C", pack("C", 256)), "\n",
unpack("c", pack("c", -129)), "\n",
unpack("c", pack("c", -128)), "\n",
unpack("c", pack("c", 127)), "\n",
unpack("c", pack("c", 128)), "\n";
no warnings 'pack' ;
print unpack("C", pack("C", -1)), "\n";
print unpack("C", pack("C", 0)), "\n";
print unpack("C", pack("C", 255)), "\n";
print unpack("C", pack("C", 256)), "\n";
print unpack("c", pack("c", -129)), "\n";
print unpack("c", pack("c", -128)), "\n";
print unpack("c", pack("c", 127)), "\n";
print unpack("c", pack("c", 128)), "\n";
EXPECT
Character in 'C' format wrapped in pack at - line 3.
Character in 'C' format wrapped in pack at - line 3.
Character in 'c' format wrapped in pack at - line 3.
Character in 'c' format wrapped in pack at - line 3.
255
0
255
0
127
-128
127
-128
255
0
255
0
127
-128
127
-128